Increaser - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Direct Venting (Two-pipe System)
Vent Requirements - Stainless Steel
Additional requirements for stainless steel vent pipe
material (continued)
Viessmann single pipe PP(s) increaser and 2 in. air intake
CPVC adaptor (if using ABS/CPVC/PVC material) must be
ordered, (see table 17 for part number).
Minimum pipe diameter available for exhaust stainless
steel pipe is 3 in.
The air inlet (intake) cover must stay in place.
Table 17. Increaser (min. stainless steel pipe diameter is 3 in. (76 mm)
Supplier Boiler Model
Viessmann HWB1B 26, 35
HWB2B 19, 26, 35
WARNING
(For this type of installation only:)
Boiler comes with pre-installed combustion air cover
mounted on the concentric vent pipe adaptor. Do not
remove combustion air intake cover. Removing this cover
may cause unintended room air dependent operation
(non-direct vent). Room air dependent operation requires
provision of combustion and ventilation air (as per
section "Single Pipe Venting", page 62).
Vent pipe starter adaptors for WB1B 26, 35 and WB2B
19, 26, 35
A
Air inlet (intake)
cover must stay
in place.
DO NOT remove!
Fig. 33
40
(continued)
PP(s) increaser
(60 to 80 mm) (see Fig. 32)
Part # 7440183
Legend
A Stainless steel slip joint vent starter adaptor
B 2 in. CVPC starter adaptor, ViPN 7134 769
a 3 in. (76 mm)
b 2 in. (51 mm)
c 6.25 in. (159 mm)
d 10.34 in. (263 mm)
e 3 in. (76 mm)
B
Rigid Venting Systems Installation Instructions
Fig 32
CVPC Starter Adaptor for air intake
2 in.
Part # 7134769
Flue
Optional left
connection
for air intake
Quantity
1
Air